Table 2 Catalytic comparison study of known heterogeneous catalysts in the reduction of nitrophenol

1

Graphene–Cu₃₆Ni₆₄

NH₃BH₃ (3 mmol)

30 [37]

2

Cu–Ni–AAPTMS@GO

NaBH₄ (1.5 mmol)

4 [38]

3

Ru₅₀Ni₅₀/RGONCs

NH₃BH₃ (2 mmol)

4.5 [39]

4

Pt/RGO

H₂ (1 MPa)

120 [40]

5

(Co₆)Ag_0.1Pd_0.9/RGO

HCOONH₄ (4 mmol)

20 [41]

6

Pd/GO

NaBH₄ (1.2 mmol)

10 [42]

7

MRN–Pd

NaBH₄ (1.2 mmol)

45 [43]

8

CuSO₄/GO

NaBH₄ (1.2 mmol)

30 [This work]